Monlyth

"The Moebius boys think there's another artifact on a world called Monlyth. Supposedly there's protoss guarding it - a group of fanatics, call themselves the Tal'darim. Now don't get all sentimental thinking these Tal'darim are your old protoss buddies... 'cause they ain't."

During the Second Great War, the Tal'darim were attacked simultaneously by the Zerg Swarm and Raynor's Raiders, both which sought the component of the xel'naga device that the protoss guarded. The terrans ultimately absconded with the component[3] while the zerg laid waste to the entire moon.[4]